Thermostatic controller.



J.. s IBMs.

- THERMOSTATIG coNrRoLA ArPLIoATIo FILED ooT.1s. 1o No MODEL.

` PATENTBD MAJYV24, 1904.

LBR.

@Ummm To LZZ whom i?? may concern:

UNIT-ED STAT-Es.

l Patented May 24, 1904.

JOHANN F. siEMs, OF COLUMBUS, NEBRASKA.

THEiaMosi-ATIO CONTROLLER.

` SPECIFICATION" forming part of vlieti-.ers Patent No.r 760,653, dated. May 24, 1904.

Application met october is, i902.

hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

= My present invention relates to newl and useful improvements in vessels for thermo-4 stats for use in connection with incubators, brooders, and for purposes of ventilation andl all other uses for which it may-be adapted; and it consists of. certain novel features of combination and construction of parts, as willy be hereinafter fully describedv and claimed.

The prime object of my invention, among others, is to provide a controlling device for the damper or flue of a lampv orfstove orvother` .heating appliance which will be found at all times to be thoroughly reliable and eflicientl and at the same time extremely sensitive. f

A further object of my invention, amongothers, is to place the heating apparatus un-l der perfect and complete control, whereby any desired degree of temperature may be es` -tablished and maintained with a minimum degree of variation, inasmuch as thecontrolling device will ,'as above stated, prove to be eX- tremely sensitive in its action, land therefore instantly responsive tothe slightest variation in whichof .the temperature within vthe incubating or brooding chamber or other place where mythermostatic controller may be employed.

Other objects and advantages of my ther-l mostat will beliereinaften clearly set forth,

and illustrated in the accompanying drawings, which are made a part of this applicatiomand Figure l -shows a perspective view of my invention vcomplete ready forwuse. Fig. 2- shows a sideelevation ofm'yin'vention asap- 'plied .to use upon an ordinary incubator for `the purpose of controlling the damper of the heater. f Fig. Sis a transverse section of Fig.v 2 on line m while Fig. 4 is a transverse section of another form of my invention wherein the alcohol-receptacle is shown tobe truly .l

Serial No. 127,854. (No model.)

cylindrical instead ofl being elongated,A as

shown in Fig.3.i Y

In order to conveniently refer to all of the various details of my invention and the elements deemed necessary in showing a practical application thereof to use, numerals will be employed, the same numeral applying to asimilarpart throughout the several views.

Referring to the numerals on the drawings,.1 indicates the tubular body portion of my thermostatic controller, which is designedA tocontain alcohol vor other suitable liquid which is properly responsive to varying temperatures,whereby such liquid will readilyV expand orcontract, according to the temperature surrounding the same.

.The body portion l is preferably formed of glass, though any other suitable material may be employed, and .isso formed as to have theoutwardly-converging inner end 1,

.the outwardly-converging outer end llt, and

the bottle-like neck or extension 2, provided with a closure or stopper 3, as it is through said neck the contents of my thermostatic controllerrare introduced,'as will beY herein- .afterfspecificallyset forth. The body portion l is preferably formed in transverseorfcross section, asA shown in Figs. 1, 2', and 3, though it will be understood that such form may be varied as desired. At the inner or opposite end of the bodyportion containing the neck.- section 2 the said body is reduced in diameter, so as to provide a connecting-tube, having the upwardly inclined. tubular section 4 surmounted by a vertical'section 4, which eX- tends upward a proper height and is then bent downward to provide a return-section 4b and is enlarged so as toform the preferably sphericalreservoir or bulb 5,-though it will be un.-

l lderstood 4that .said reservoir may have any otherk kshapedeemed most l.suitable for the purpose.. The spherical reservoir` 5 valso terminates in# or is connected with the upwardlydirected curved branch 6 of the horizontallydisposedv tube-,section y7, which-extends the entire length parallel with the top. of the body portion 1, as presented in Figs. land 2and terminates in the upwardly-directed curved branch 8, which .latter is enlafjged to IOO form the preferably spherical reservoir or bulb 9, corresponding in size with the reservoir 5.

The body portion 1 and accompanying parts hereinbefore set-l forth are truly balanced upon the eye projection 10, formed integral with the tubular section 7 or otherwise connected thereto at its central portion, and it is therefore obvious that my thermostatic controller when suspended upon the supporting-rod 11 will be truly balanced thereon even though when the body portion 1 is filled with alcohol or other suitable liquid and the reservoirs 5 and 9 and connecting-tubes are illed with mercury, as it is by means ot' said sensitive substances that movement is imparted to my controller sufficient to enable it to reliably perform its oiiice.

By reference to Fig. 1 it will be observed that the reservoir 9 is provided upon its upper side with the eye projection or apertured extension 12, affording pivotal engagement with the controlling-rod 13, which latter eX- tends upward into pivotal union with vthe lever 14, supported upon the bracket 15 and having at its eXtreme outer or free end the upwardly-curved branch or terminal 16, designed to pivotally connect with the stem 17 of the damper proper, 18. y

The damper 18 is designed to cooperate in the usual manner with the eXtreme upper end oi' the flue 19, whiclris provided with the inwardly-directed branch 20, extending into the interior of the incubating or brooding chamber, as clearly shown in Fig. 2, and it is therefore clearly obvious that when the damper 18 i is lowered into contact with the iue 19 the heat will be reliably directed through the branch 2O into the incubator or brooder or other point where it is desirable to conduct the same. It is further obvious that when the damper 18 is raised the heat will take the most direct course upward and pass out into the air, thereby shunting the branch 2O and leaving the interior of the incubator unsupplied with an additional flow of heat. The lever-section 14 is provided with the counterpoise 21, as

is usual, said counterpoise being designed to be moved in either direction upon a threaded portion of said lever, thereby enabling a most accurate adjustment of my thermostatic controller, whereby when the slightest expansion occurs within the body portion 1 the equilibrium will be disturbed and the lever 14 operated to open or close the damper, thereby making it possible to maintain within the heat-receiving chamber any desired degree of temperature deemed mostsuitable and productive of the best results.

The tubular section 7 and its upwardlycurved branches 6 and 8 are provided with a comparatively small continuous bore, and said bore'is completely filled with mercury, while the reservoirs 5 and 9 are each half-full, more or less, of mercury. The upper half of the reservoir 5 and the body portion 1 and the tubular connection intermediate said parts are completely filled with alcohol, while the upper halt' of the reservoir 9 contains air, a suitable vent 9 being' provided. Them therefore, the slightest expansion occurs in the contents of the body portion 1, the alcohol will be forced upward through the tubular connection 4 and will force the mercury within the lower halt' ot' the reservoir 5 downward, causing the mercury to risc in the rcservoir 9, and thereby instantly disturb the equilibrium and insuring that a downward pull will be made upon the link-section 13 and elevate the damper-section 18 and cause the heat Jfrom the lamp or stove to How directly upward and continue to so ilow until the temperature is lowered in the incubating or brooding chamber.

When the temperature within the incubator shall have become lowered beyond the desired point, contraction of the alcohol or other liquid in the body portion 1 will take place, thereby causing the alcohol in the tubular branch 4 and the upper portion ol the reservoir 5 to be withdrawn into the body portion 1 and incidentally permitting the excess oi mercury in the reservoir 9 to move downward and thence upward into the reservoir 5, and thereby restore a true balance or equilibrium ot' my thermostatic controller suiiicient to cause the free end of the lever-section 14 to be raised to bring the damper in contact with the upper end ot the liue 19, and thereby reestablish the flow ot the heat through the branch 20 into the heat-receiving chamber, this operation being continued indelinitely, and thereby making it absolutely certain that a uniform temperature within the incubating or brooding chamber will be reliably maintained.

Having thus fully described the details oi construction involved in the materialization ot my invention and the manner of applying the same to use, further description is deemed nnnecessary.

What I claim as new, and desire to secure by Letters Patent, is-

1. A thermostatic-controller vessel formed with a horizontal tubular body having a converging o uter end formed with a lilling-neck and a converging inner end, a horizontal tube surmounting the tubular body parallel therewith and secured thereto having uljiwardlycurved outer and inner ends located over the converging outer and inner ends of the tilbular body respectively, an inner bulb surmou n ting and connected with the curved inner end of the horizontal tube, a connecting-tube having a vertical part, a curved lower end connected with the converging inner end ol the tubular body, and a doubly-curved upper end connected with the top of the inner bulb, an outer bulb surmounting and connected with the curved outer end of the horizontal tube lOO IIS

and having `a vent-hole and an integral eye'at the top thereof and an eyeformed integral with the horizontal tube centrally ofv the latter n whereby the vessel is suspended.

2. A thermostatic controller comprising a horizontal body having a4 converging inner endand a converging` outer end yprovided with a filling-neck, a stopper for the filling-neck, a horizontaltube surmounting and secured to the body, having upwardly-curved ends and a centrally-arranged eye projection at the top of the tube for supporting the controller, a reservoir surmounting'and formed on the inner curved end of the horizontal tube, a vertical connecting-tube having an inclined lower part connected With the inner end of the body and a downturned upper part connected with the top of the inner reservoir, areservoir surmounting and formed on the outer curved end u of the horizontal tube, having a vent-hole and an eye projectionfor connecting the damper mechanism, means connected with the eye projection of the horizontal tube for suspending the controller, means .connected With the eye projection of the outer reservoir for controlling a damper; the body, connecting-tube and approximately one-half `of the inner reservoir containing responsive liquid and the horizontal tube and approximately one-half of the reservoirs containing mercury, as set forth.

In testimony whereof I ailix my signature in presence of tWo Witnesses. 1

JOHANN F. SIEMS. Witnesses: A e

EVELYN PADGETT, GUY E. PADGETT. 

